Improvement in tinman s machine



WMM" f@ wgwm G! Q @dmail gaat @that awstats-W- CHARLES H. RAYMOND, OF SOUTHING'ION, CONNECTICUT Letters Patent No. 88,411, dated Mez/rch 30, 1869.

IMPROVEMENT IN TINMANS MACHINE.

The Schedule referred to in these Letters Patent and making part of the sama.

To all who-m it may concern.-

Be it known that LCHARLES H. RAYMOND, of Southington, in thecounty of Hartford, and State of Connecticut, have invented and made acertain new and useful Improvement in Tinmans Machines; and I do hereby declare the followingto bea full, clear, and

exact description of the said invention, reference being'` down to place.

A machine of this character is seen in Letters Patent granted to me, August 30, 1859.

My present invention is for simplifying the construction, tightening the shafts in their boxes, and preventing looseness in case of Wear, and facilitating the adjustment of the respective parts.

In` the drawing-l a is the stock, or support of the machine, to be received into a hole in the work-bench, or other support.

Ihe case, or frame of the machine is cast'orformed with this stock a, and of this, b is the front bearing for the shaft c of the lower roller d, and' e are the sides of the frame, or case, extended up, and united by the top portion f.

g is the back bearing'for the shaft c, the same being attached to c by the screws 2 2.

The shaft c, near the roller d, 'tapers at the part where it passes through the bearing, b then it is parallelor nearly so, and on this part the gear h is keyed;

and then said shaftctapers in passing through the bearing, g, and the back part of the shaft is formed with a screw-thread at 3, and receives on its end the crank, or handle It and t' t are set-nuts on the screwpart 3 of the shaft c.

It will now be understood that any Wear ofthe shaft c,"or bearings b g, can be compensated by the end movement of the shaft c, bringing the tapering portions properly 'to place, and the set or jam-nuts tt, taking against the face of g, retain the shaft1 c in position, but allow it to turnfreely, but the nuts themselves cannot work loose, being jammed against cach other.

The shaft It, of the upper roller l, is made in a similar manner, so as to taper in the bearings m n, and set up and retained by the jam-nuts o 11. The bearings m. a, however, are cast together, being connected by the yoke-piece 0.

An opening is left between the side pieces e of the HOM case, or frame, of a size to admit the bearing, m, and allow it only a movement up and down by the action of the screw r and spring s, as the upper roller Z is raised or forced down. f

At the sides of the bearing, n, are trunnions, t, entering boxes in the adjustable fork u, that is held by the screw c, through the top, f.

The wheel w,on the shaft k, gears into thewheel h, and receives its motion therefrom, and the gauge a; is provided with its adjusting-screw S, as usual.

It will now be understood ,that the boxes, or 'bearings m n, with their connecting-yoke 1, are .fitted to the shaft k, and the trunnions t are connected to the fork u, and'the whole are introduced endwise into the frame, or case ej, and the screw 'u inserted, and the parts adjusted so that the roller l, when` screwed upon the shaft k, shall occupy the correct position relatively to `theroller d.

The parts are strong, easily made and adjusted, the bearings of both the shafts can be tightened as they may wear, and the swinging movement of the upper shaft, as the roller l is raised or lowered, does not disturb the shaft It in its bearings fm n.

In some characters .of machines of this class, the crank, or handle It will be applied to the shaft k, and

lthe latter will drive the shaft c by the gears w and h.

The improvement herein set forth may be applied to any character of sheet-metal-bending machine to which it may be available, whether the machine is for` bending the edge of the sheet-metal, or any other portion thereof.

What I claim, and desire to secure by Letters Patent, is-

1. The tapering shaft c or lc, fitted into the correspondingly-shaped bearings, and carrying the roller d orl at one end, in combination with the set-nuts, applied to the shaft at the back bearing, substantially as and for the purposes specified.

2. The bearings ma, connected by the yoke q, in combination with the tapering shaft It and set-nuts o p, substantially as set forth.

3. The bearings m it, connected together, and carrying the upper shaft L ofthe tinmans machine, in combination with mechanism substantially as set forth, for adjusting said shaft endwise, and allowing ofthe swinging movement, substantially as specified.

4. The case, or frame, formed of the side pieces ec and top piece f, in combination with the shaft It, bearings m n, and wheel w, so that these parts can be introduced from the rear, and sustained in place, substantially as set forth.

`In witness whereof, I have hereunto set my signature, this 10th day ofliebruary, 1869.

CHARLES H. RAYMOND. Witnesses:

H. It. BRADLEY, FRED. H. WOODRUFF. 

